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研究报告

摘要：平板玻璃行业是典型的高能耗、高排放行业，目前关于中国平板玻璃行业的碳排放问题还没有得到深入的研究.因此，本文调查了中国300余条主要的平板玻璃生产线，并在此基础上从范围1（工艺过程和化石燃料燃烧引起的直接排放）和范围2（净购入电力和热力在生产阶段引起的间接排放）评估了中国平板玻璃行业从2005年到2014年的CO₂排放情况.结果发现，中国平板玻璃行业CO₂排放量逐年增加，由2005年的2626.9×10⁴ t逐步上升到2015年的4620.5×10⁴ t.研究表明：能源消耗是平板玻璃行业碳排放的最主要来源，占比在80%左右，节能降耗是促进平板玻璃行业CO₂减排的主要途径；平板玻璃生产原料中碳酸盐的热分解是CO₂的主要来源之一，占总排放量的20%左右，控制平板玻璃配合料的气体率，在减少平板玻璃生产过程中的CO₂排放有很大潜力；推荐平板玻璃新建项目使用天然气并配备大型熔窑（日熔化量650 t以上）的浮法玻璃生产线，以减少CO₂排放.

Abstract：Flat glass industry is a large energy consumer and industrial process emitter. However, there is no in-depth investigation on its CO₂ emissions. In this study, we studied more than 300 glass production lines in China and estimated CO₂ emissions from 2005 to 2014 for scope 1 (direct CO₂ emissions from industrial process and fossil fuel combustion) and scope 2 (indirect CO₂ emissions from purchased electricity and heat consumption). The total CO₂ emission from flat glass industry in China rises from 2626.9×10⁴ tonnes in 2005 to 4620.5×10⁴ tonnes in 2014. It is concluded that energy consumption is the main factor responsible for CO₂ emission from flat glass industry in China, therefore energy saving is an important way to promote CO₂ reduction. Another major CO₂ emission source is raw material dissociation during the production process, accounting for about 20% of total CO₂ emission. Controlling gas rate of materials therefore has a great potential in reducing carbon emissions. To reduce the emission of glass production industry, we recommend to apply large capacity kiln (more than 650 t per day) and use natural gas as fuel when establishing new glass lines.